Hides full activities on the {EPITECH} intra. Only works with weekly view. Tested with Firefox (GreaseMonket) & Chrome (TamperMonkey) successfully.

hide_full_activities.user.js

// ==UserScript==
// @name        Hide full activities
// @namespace   lodi_g
// @description Hides full activities on the {EPITECH} intra. Only works with weekly view. Tested with Firefox (GreaseMonket) & Chrome (TamperMonkey) successfully.
// @include     *intra.epitech.eu/planning/*
// @require     https://code.jquery.com/jquery-3.0.0.min.js
// @require     https://gist.github.com/raw/2625891/waitForKeyElements.js
// @version     0.2a
// @grant       GM_getValue
// @grant       GM_setValue
// ==/UserScript==

// ==ChangeLog==
// 
// v0.2a
//   - Implemented GM_getValue & GM_setValue to remember user's choice.
//
// v0.1a
//  - Initial release
// ==/ChangeLog==

waitForKeyElements(".buttons a", actionFunction);

function actionFunction(jNode) {
	$("fieldset.filters.student").append(`<div class="item event"><input name="event" id="hide-full-act" type="checkbox"><label for="hide-full-act">Hide full activities</label></div>`);

	if (GM_getValue("hidden", 0) == 1) {
		$("#hide-full-act").attr("checked", "checked");
		hideFullActivities();
	}

	$("#hide-full-act").on("click", function(e) {
		main(e);
	});
}

function main(e) {
	if (e.target.checked) {
		GM_setValue("hidden", !GM_getValue("hidden"));
		hideFullActivities();
	}
	else {
		GM_setValue("hidden", !GM_getValue("hidden"));
		showFullActivities();
	}
}

function hideFullActivities() {
	$(".appoint").each(function(i) {
		if ($(this).find(".used_seats").length > 0) {
			let usedSeats = $(this).find(".used_seats").attr("title").split(" ")[0];
			let totalSeats = $(this).find(".room_seats").attr("title").split(" ")[0];
			if (usedSeats === totalSeats) {
				$(this).hide();
				$(this).toggleClass("removed-full");
			}
		}
	});
}

function showFullActivities() {
	$(".appoint").each(function() {
		if (!$(this).is(":visible")) {
			$(this).show();
			$(this).toggleClass("removed-full");
		}
	});
}